PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/22-16:43:00
G01     50.7           25.6                9.7 +/-    2.30      18.7 +/-    2.30  0.090 / 0.310
G06     177.7          24.7               11.6 +/-    1.87      22.9 +/-    1.87  0.130 / 0.380
G07     145.5          9.9                11.3 +/-    4.04      31.6 +/-    4.04  0.060 / 0.180
G11     44.1           12.9                6.9 +/-    2.76      17.9 +/-    2.76  0.100 / 0.160
G13     253.4          30.7               11.2 +/-    1.57      19.3 +/-    1.57  0.040 / 0.060
G15     288.3          15.1                7.6 +/-    1.85      18.9 +/-    1.85  0.040 / 0.050
G17     324.4          78.9               10.1 +/-    0.42      10.3 +/-    0.42  0.180 / 0.330
G19     247.0          61.5               10.6 +/-    0.90      11.9 +/-    0.90  0.140 / 0.400
G28     51.3           53.1               10.6 +/-    0.64      12.9 +/-    0.64  0.120 / 0.120
G30     149.4          44.7               11.2 +/-    0.66      15.1 +/-    0.66  0.070 / 0.120