PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/29-04:27:50
G01     60.6           30.7                5.2 +/-    0.73       9.0 +/-    0.73  0.050 / 0.150
G07     141.7          20.3                7.8 +/-    0.87      17.0 +/-    0.87  0.070 / 0.160
G11     47.6           22.7                2.8 +/-    1.03       5.8 +/-    1.03  0.140 / 0.470
G13     262.6          35.8                8.0 +/-    0.99      12.6 +/-    0.99  0.150 / 0.430
G15     295.3          15.9                0.4 +/-    2.01       1.0 +/-    2.01  0.080 / 0.130
G17     264.3          78.7                7.5 +/-    0.68       7.6 +/-    0.68  0.070 / 0.130
G18     40.3           10.4                3.6 +/-    2.63       9.8 +/-    2.63  0.030 / 0.050
G19     231.3          48.3                8.3 +/-    0.82      10.7 +/-    0.82  0.030 / 0.050
G28     30.9           58.0                5.4 +/-    0.34       6.3 +/-    0.34  0.040 / 0.040
G30     143.7          54.2                7.9 +/-    1.15       9.5 +/-    1.15  0.040 / 0.040