PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/04-21:57:40
G07     0.7            65.8               11.1 +/-    0.45      12.0 +/-    0.45  0.060 / 0.160
G08     75.4           52.8               12.6 +/-    0.95      15.4 +/-    0.95  0.060 / 0.100
G09     182.5          57.1               13.5 +/-    0.66      15.7 +/-    0.66  0.080 / 0.270
G11     137.7          22.6               13.3 +/-    1.40      27.6 +/-    1.40  0.130 / 0.270
G23     158.7          23.4               14.0 +/-    1.68      28.5 +/-    1.68  0.030 / 0.040
G27     42.9           20.9                9.5 +/-    2.12      20.4 +/-    2.12  0.040 / 0.040
G28     252.7          42.1               12.0 +/-    2.34      16.9 +/-    2.34  0.040 / 0.030
G30     318.3          49.3                9.3 +/-    0.55      11.8 +/-    0.55  0.030 / 0.030