PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/10-15:27:50
G01     53.2           27.2                5.6 +/-    2.20      10.5 +/-    2.20  0.040 / 0.050
G06     178.2          20.4                2.7 +/-   21.17       6.0 +/-   21.17  0.040 / 0.050
G07     144.0          13.0                7.4 +/-    2.32      19.3 +/-    2.32  0.170 / 0.360
G11     45.6           19.1                6.0 +/-    2.57      13.6 +/-    2.57  0.120 / 0.330
G13     254.1          33.4                7.8 +/-    2.60      12.7 +/-    2.60  0.090 / 0.160
G15     287.6          16.2                6.8 +/-    0.98      16.4 +/-    0.98  0.080 / 0.180
G17     276.4          77.5                8.4 +/-    0.52       8.6 +/-    0.52  0.030 / 0.020
G19     239.5          57.5                7.9 +/-    1.97       9.2 +/-    1.97  0.030 / 0.030
G28     36.3           57.8                8.6 +/-    1.18      10.0 +/-    1.18  0.110 / 0.070
G30     147.2          44.4                7.7 +/-    0.57      10.4 +/-    0.57  0.080 / 0.070