PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/13-11:43:00
G01     98.0           28.6                3.3 +/-    0.60       6.0 +/-    0.60  0.060 / 0.160
G07     117.8          49.5                5.7 +/-    0.55       7.2 +/-    0.55  0.070 / 0.140
G08     41.9           18.0                2.5 +/-    1.05       5.8 +/-    1.05  0.040 / 0.060
G11     79.0           43.4                4.4 +/-    0.66       6.1 +/-    0.66  0.040 / 0.060
G13     302.4          34.0                4.2 +/-    2.03       6.7 +/-    2.03  0.040 / 0.080
G17     209.2          41.2                5.3 +/-    1.27       7.6 +/-    1.27  0.040 / 0.080
G18     71.4           24.6                3.5 +/-    0.90       7.0 +/-    0.90  0.030 / 0.050
G19     210.3          21.2                1.8 +/-    2.64       3.8 +/-    2.64  0.030 / 0.060
G28     319.0          60.0                4.1 +/-    0.52       4.6 +/-    0.52  0.070 / 0.180
G30     64.3           80.0                3.3 +/-    0.64       3.4 +/-    0.64  0.070 / 0.140