PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/31-17:57:50
G03     190.8          25.3               12.8 +/-    2.55      24.9 +/-    2.55  0.110 / 0.230
G07     283.2          33.0                9.6 +/-    2.25      15.8 +/-    2.25  0.100 / 0.210
G08     150.3          20.4               13.8 +/-    1.70      30.0 +/-    1.70  0.040 / 0.030
G09     320.3          54.8                9.1 +/-    0.62      10.9 +/-    0.62  0.040 / 0.020
G16     45.2           44.7               10.0 +/-    0.83      13.6 +/-    0.83  0.040 / 0.060
G23     88.3           80.9               10.2 +/-    0.59      10.3 +/-    0.59  0.060 / 0.060
G26     42.9           16.1                8.0 +/-    2.24      19.5 +/-    2.24  0.040 / 0.130
G27     106.7          30.5               12.2 +/-    0.68      21.1 +/-    0.68  0.040 / 0.140