PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/13-19:43:10
G01     74.4           33.3               11.1 +/-    1.26      18.3 +/-    1.26  0.080 / 0.240
G07     135.6          34.2               14.5 +/-    1.10      23.3 +/-    1.10  0.090 / 0.250
G11     56.6           33.6               11.3 +/-    2.16      18.4 +/-    2.16  0.030 / 0.040
G13     278.6          37.7               14.0 +/-    1.98      21.1 +/-    1.98  0.030 / 0.030
G15     305.5          14.4                9.9 +/-    2.76      25.0 +/-    2.76  0.060 / 0.070
G17     227.9          62.8               15.0 +/-    0.98      16.7 +/-    0.98  0.050 / 0.090
G18     51.8           19.9               11.1 +/-    5.93      24.5 +/-    5.93  0.270 / 0.240
G19     222.1          37.8               15.8 +/-    1.65      23.8 +/-    1.65  0.260 / 0.250
G28     14.6           59.9               13.8 +/-    1.35      15.7 +/-    1.35  0.040 / 0.050
G30     132.0          63.7               15.0 +/-    0.22      16.5 +/-    0.22  0.040 / 0.050