PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/13-19:13:00
G03     190.0          24.2               15.6 +/-    2.06      31.0 +/-    2.06  0.110 / 0.310
G07     283.8          33.4               11.7 +/-    1.44      19.1 +/-    1.44  0.170 / 0.330
G08     149.0          21.4               16.9 +/-    1.85      35.9 +/-    1.85  0.060 / 0.080
G09     320.3          55.3               13.0 +/-    0.72      15.4 +/-    0.72  0.070 / 0.070
G16     45.0           44.7               12.2 +/-    1.19      16.6 +/-    1.19  0.100 / 0.210
G22     177.4          10.2               15.9 +/-    4.50      44.2 +/-    4.50  0.110 / 0.200
G23     87.9           81.3               11.8 +/-    0.67      11.9 +/-    0.67  0.040 / 0.070
G26     42.9           15.9                9.8 +/-    3.28      23.9 +/-    3.28  0.060 / 0.070
G27     105.9          30.8               14.5 +/-    1.47      24.9 +/-    1.47  0.040 / 0.030
G30     270.0          11.4                2.1 +/-   38.98       5.7 +/-   38.98  0.030 / 0.030