PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/15-11:42:50
G08     306.9          19.0                5.4 +/-    0.83      12.2 +/-    0.83  0.130 / 0.140
G10     344.3          61.6                4.5 +/-    0.76       5.1 +/-    0.76  0.080 / 0.130
G14     222.2          34.6                8.8 +/-    1.99      14.1 +/-    1.99  0.220 / 0.570
G20     87.6           10.0                4.5 +/-    3.67      12.6 +/-    3.67  0.390 / 0.410
G21     139.8          49.4                8.1 +/-    0.41      10.3 +/-    0.41  0.050 / 0.080
G24     67.0           29.3                3.7 +/-    1.28       6.6 +/-    1.28  0.050 / 0.060
G27     265.4          35.9                9.8 +/-    1.41      15.2 +/-    1.41  0.040 / 0.040
G32     230.4          59.8                8.5 +/-    1.53       9.7 +/-    1.53  0.040 / 0.060