PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/08-13:28:00
G01     85.8           32.6                5.4 +/-    2.28       8.9 +/-    2.28  0.030 / 0.020
G07     128.8          42.2                8.7 +/-    1.04      12.3 +/-    1.04  0.030 / 0.030
G11     63.6           37.4                7.0 +/-    0.71      10.6 +/-    0.71  0.040 / 0.060
G13     289.9          37.2                8.7 +/-    1.99      13.3 +/-    1.99  0.040 / 0.060
G17     217.3          58.3                7.8 +/-    1.12       9.0 +/-    1.12  0.070 / 0.100
G18     59.6           22.7                6.1 +/-    1.92      12.6 +/-    1.92  0.080 / 0.100
G19     216.6          27.3                5.9 +/-    2.49      11.0 +/-    2.49  0.060 / 0.100
G28     355.9          61.5                5.4 +/-    0.72       6.1 +/-    0.72  0.080 / 0.100
G30     113.3          74.8                7.3 +/-    0.39       7.5 +/-    0.39  0.070 / 0.140