PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/14-10:42:50
G01     59.4           29.7                4.4 +/-    1.23       7.8 +/-    1.23  0.050 / 0.130
G07     141.5          21.1                5.0 +/-    3.50      10.7 +/-    3.50  0.060 / 0.140
G11     48.7           25.9                3.1 +/-    1.81       5.8 +/-    1.81  0.030 / 0.030
G13     261.8          36.4                5.7 +/-    3.14       8.8 +/-    3.14  0.030 / 0.030
G15     295.0          15.9                2.9 +/-    1.17       7.0 +/-    1.17  0.080 / 0.070
G17     250.3          74.0                5.6 +/-    0.39       5.8 +/-    0.39  0.120 / 0.080
G18     42.0           12.9                2.3 +/-    2.24       6.1 +/-    2.24  0.110 / 0.240
G19     231.2          52.2                5.1 +/-    2.67       6.3 +/-    2.67  0.140 / 0.240
G28     21.8           60.0                5.7 +/-    0.63       6.5 +/-    0.63  0.040 / 0.050
G30     143.8          54.6                7.2 +/-    0.50       8.7 +/-    0.50  0.040 / 0.040