PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/04-00:27:50
G02     88.6           10.2                8.9 +/-    2.81      24.6 +/-    2.81  0.220 / 0.160
G05     45.8           26.1                7.6 +/-    3.74      14.5 +/-    3.74  0.170 / 0.180
G13     90.6           35.3               10.9 +/-    1.05      17.2 +/-    1.05  0.120 / 0.090
G15     141.0          43.2               12.5 +/-    0.87      17.3 +/-    0.87  0.080 / 0.080
G20     237.6          21.2               12.2 +/-    2.23      26.2 +/-    2.23  0.040 / 0.020
G21     302.2          39.1                9.1 +/-    1.56      13.4 +/-    1.56  0.020 / 0.020
G25     205.3          20.1               13.2 +/-    1.80      28.9 +/-    1.80  0.090 / 0.120
G26     297.7          20.6                8.6 +/-    1.25      18.7 +/-    1.25  0.090 / 0.110
G29     124.7          86.2                9.8 +/-    0.35       9.8 +/-    0.35  0.040 / 0.050