PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/11-04:12:30
G10     248.2          25.9               15.9 +/-    1.13      30.4 +/-    1.13  0.140 / 0.120
G13     55.7           30.5                9.5 +/-    0.78      16.5 +/-    0.78  0.090 / 0.150
G15     89.8           57.2               10.9 +/-    1.38      12.6 +/-    1.38  0.040 / 0.060
G16     301.5          14.5               10.3 +/-    2.20      26.1 +/-    2.20  0.050 / 0.050
G20     266.5          49.1               11.2 +/-    1.95      14.3 +/-    1.95  0.070 / 0.170
G21     332.3          58.9                9.0 +/-    0.64      10.4 +/-    0.64  0.080 / 0.180
G26     272.9          16.3               16.8 +/-    2.20      40.6 +/-    2.20  0.030 / 0.040
G29     160.9          49.8               11.7 +/-    1.96      14.8 +/-    1.96  0.020 / 0.040