PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/18-05:12:50
G01     60.6           30.7                3.2 +/-    1.18       5.6 +/-    1.18  0.070 / 0.150
G07     141.7          20.6                5.2 +/-    1.73      11.2 +/-    1.73  0.110 / 0.170
G11     47.6           22.7                2.2 +/-    1.53       4.5 +/-    1.53  0.050 / 0.100
G13     262.6          35.8                5.6 +/-    1.80       8.8 +/-    1.80  0.050 / 0.080
G15     295.6          15.7                1.8 +/-    0.99       4.4 +/-    0.99  0.040 / 0.050
G17     264.3          78.7                6.0 +/-    0.75       6.1 +/-    0.75  0.050 / 0.050
G18     40.5           10.7                3.1 +/-    2.02       8.5 +/-    2.02  0.130 / 0.450
G19     231.3          48.0                4.8 +/-    1.66       6.1 +/-    1.66  0.100 / 0.380
G28     31.1           57.9                3.9 +/-    0.94       4.5 +/-    0.94  0.040 / 0.030
G30     143.7          54.3                6.5 +/-    0.64       7.8 +/-    0.64  0.030 / 0.030