PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/07-14:43:10
G01     76.9           33.0                9.5 +/-    0.79      15.7 +/-    0.79  0.060 / 0.100
G07     134.0          32.6               12.2 +/-    2.01      20.2 +/-    2.01  0.100 / 0.100
G11     56.6           31.5                8.5 +/-    1.03      14.4 +/-    1.03  0.040 / 0.050
G13     283.7          36.9               10.0 +/-    1.30      15.3 +/-    1.30  0.030 / 0.050
G15     309.8          12.5                6.2 +/-    2.37      16.5 +/-    2.37  0.050 / 0.100
G17     225.6          66.9               11.5 +/-    1.17      12.4 +/-    1.17  0.080 / 0.090
G19     220.5          39.1               13.3 +/-    1.86      19.7 +/-    1.86  0.030 / 0.030
G28     10.1           60.2                9.2 +/-    0.98      10.4 +/-    0.98  0.030 / 0.030
G30     126.6          69.3               10.4 +/-    0.58      11.1 +/-    0.58  0.060 / 0.110