PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/15-20:43:10
G01     44.3           20.4               10.9 +/-    0.76      23.7 +/-    0.76  0.070 / 0.230
G06     175.5          34.0               19.8 +/-    0.66      31.9 +/-    0.66  0.070 / 0.210
G13     242.7          25.6               17.3 +/-    1.72      33.4 +/-    1.72  0.060 / 0.080
G15     276.5          13.9               15.1 +/-    1.46      38.5 +/-    1.46  0.060 / 0.110
G17     334.8          75.4               16.1 +/-    0.49      16.6 +/-    0.49  0.040 / 0.080
G19     261.0          64.6               14.4 +/-    0.56      15.8 +/-    0.56  0.040 / 0.070
G24     318.0          15.0               10.6 +/-    2.79      26.3 +/-    2.79  0.130 / 0.270
G28     64.5           49.3               14.2 +/-    0.75      18.0 +/-    0.75  0.140 / 0.320
G30     152.7          32.3               18.6 +/-    1.08      31.1 +/-    1.08  0.050 / 0.100