PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/12-11:58:00
G01     120.5          16.8                2.9 +/-    1.12       6.9 +/-    1.12  0.030 / 0.040
G07     76.6           67.2                2.6 +/-    0.57       2.8 +/-    0.57  0.030 / 0.040
G08     45.1           31.2                3.0 +/-    1.41       5.1 +/-    1.41  0.030 / 0.040
G09     175.5          25.5                5.0 +/-    2.17       9.7 +/-    2.17  0.020 / 0.040
G11     107.3          39.3                4.2 +/-    0.86       6.1 +/-    0.86  0.080 / 0.200
G13     318.3          18.4                1.8 +/-    2.26       4.1 +/-    2.26  0.110 / 0.200
G17     200.8          24.0                1.7 +/-    1.27       3.3 +/-    1.27  0.050 / 0.090
G18     95.3           20.2                3.3 +/-    1.79       7.3 +/-    1.79  0.050 / 0.100
G28     289.4          56.6                3.6 +/-    0.84       4.2 +/-    0.84  0.160 / 0.290
G30     341.1          66.2                0.9 +/-    0.57       1.0 +/-    0.57  0.130 / 0.340