PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/13-10:12:50
G01     271.7          42.0                6.7 +/-    2.58       9.4 +/-    2.58  0.040 / 0.050
G03     316.2          32.1                3.9 +/-    1.79       6.6 +/-    1.79  0.050 / 0.050
G10     128.7          16.8                5.9 +/-    0.94      13.9 +/-    0.94  0.040 / 0.070
G11     251.0          20.1                6.2 +/-    1.89      13.5 +/-    1.89  0.060 / 0.060
G14     42.0           50.6                4.5 +/-    1.13       5.6 +/-    1.13  0.090 / 0.120
G18     233.2          39.7                5.9 +/-    1.66       8.7 +/-    1.66  0.090 / 0.150
G22     314.6          53.8                4.6 +/-    0.83       5.6 +/-    0.83  0.040 / 0.060
G25     53.8           16.7                4.3 +/-    1.99      10.2 +/-    1.99  0.050 / 0.050
G31     60.1           75.0                4.6 +/-    0.49       4.7 +/-    0.49  0.070 / 0.040
G32     60.2           36.7                4.4 +/-    1.29       6.8 +/-    1.29  0.070 / 0.060