PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/13-12:57:50
G08     276.4          19.4                4.3 +/-    1.01       9.5 +/-    1.01  0.270 / 0.210
G10     50.2           60.6                5.9 +/-    1.20       6.6 +/-    1.20  0.110 / 0.390
G11     316.4          11.4               -2.7 +/-   11.05      -7.4 +/-   11.05  0.040 / 0.040
G14     254.0          60.5                8.3 +/-    0.99       9.4 +/-    0.99  0.050 / 0.050
G21     153.2          19.2                4.7 +/-    1.51      10.5 +/-    1.51  0.100 / 0.120
G24     42.3           14.3                3.0 +/-    3.36       7.5 +/-    3.36  0.080 / 0.120
G27     235.1          19.2                4.7 +/-    4.30      10.5 +/-    4.30  0.150 / 0.220
G31     178.5          26.0                6.3 +/-    1.28      12.0 +/-    1.28  0.170 / 0.210
G32     322.7          76.0                8.0 +/-    0.39       8.2 +/-    0.39  0.040 / 0.020