PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/28-17:12:50
G02     199.9          13.7               10.7 +/-    3.74      27.4 +/-    3.74  0.100 / 0.180
G06     172.7          46.4               12.5 +/-    0.95      16.5 +/-    0.95  0.100 / 0.180
G13     230.7          17.7               13.5 +/-    1.95      31.4 +/-    1.95  0.040 / 0.090
G17     9.9            66.4                9.0 +/-    0.59       9.7 +/-    0.59  0.050 / 0.070
G19     303.4          72.0               10.5 +/-    0.65      11.0 +/-    0.65  0.090 / 0.340
G24     313.5          24.6               10.9 +/-    2.19      21.5 +/-    2.19  0.140 / 0.390
G28     75.5           47.6               10.1 +/-    0.53      13.2 +/-    0.53  0.030 / 0.050
G30     155.5          18.6               13.7 +/-    1.16      31.3 +/-    1.16  0.030 / 0.040