PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/27-15:43:00
G01     72.3           32.6                7.5 +/-    1.35      12.5 +/-    1.35  0.040 / 0.060
G07     135.9          28.5                8.8 +/-    1.29      15.9 +/-    1.29  0.040 / 0.050
G11     54.5           32.3                6.6 +/-    1.29      11.1 +/-    1.29  0.080 / 0.140
G13     275.9          38.7               10.9 +/-    0.91      16.3 +/-    0.91  0.130 / 0.150
G15     303.8          15.0                8.1 +/-    1.27      20.1 +/-    1.27  0.070 / 0.110
G17     227.9          65.1               10.9 +/-    0.90      11.9 +/-    0.90  0.090 / 0.110
G18     49.5           18.5                7.0 +/-    2.01      15.9 +/-    2.01  0.040 / 0.030
G19     221.8          41.3               11.6 +/-    1.71      16.6 +/-    1.71  0.030 / 0.050
G28     4.3            61.2                8.7 +/-    0.64       9.8 +/-    0.64  0.180 / 0.210
G30     133.6          61.4                9.5 +/-    0.39      10.6 +/-    0.39  0.160 / 0.250