PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/23-10:42:50
G01     44.7           20.8                2.6 +/-    0.58       5.6 +/-    0.58  0.060 / 0.080
G06     175.2          31.1                6.3 +/-    1.38      10.7 +/-    1.38  0.060 / 0.080
G11     43.9           12.3                2.0 +/-    1.99       5.3 +/-    1.99  0.160 / 0.370
G13     243.5          27.9                5.5 +/-    1.87      10.0 +/-    1.87  0.180 / 0.280
G15     278.5          14.4                3.7 +/-    1.60       9.4 +/-    1.60  0.030 / 0.030
G17     330.6          77.0                4.9 +/-    0.74       5.0 +/-    0.74  0.030 / 0.040
G19     257.9          66.2                4.3 +/-    0.79       4.7 +/-    0.79  0.080 / 0.200
G24     318.6          11.2               -7.3 +/-   25.59     -19.7 +/-   25.59  0.100 / 0.210
G28     50.9           55.4                2.6 +/-    0.60       3.1 +/-    0.60  0.040 / 0.040
G30     152.6          37.6                6.0 +/-    0.84       9.2 +/-    0.84  0.050 / 0.040