PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/07-01:57:50
G01     85.0           32.8                4.3 +/-    1.01       7.1 +/-    1.01  0.120 / 0.250
G07     129.3          41.8                5.2 +/-    0.99       7.4 +/-    0.99  0.100 / 0.260
G11     66.2           39.3                2.3 +/-    0.52       3.3 +/-    0.52  0.050 / 0.060
G13     290.4          36.6                4.7 +/-    1.45       7.2 +/-    1.45  0.060 / 0.060
G15     311.6          12.4                3.1 +/-    1.80       8.1 +/-    1.80  0.040 / 0.040
G17     218.5          56.8                4.0 +/-    0.73       4.7 +/-    0.73  0.050 / 0.050
G19     216.8          31.6                7.3 +/-    1.10      12.3 +/-    1.10  0.060 / 0.080
G28     359.2          61.2                1.0 +/-    0.81       1.1 +/-    0.81  0.050 / 0.100
G30     119.4          68.2                2.8 +/-    0.82       3.0 +/-    0.82  0.070 / 0.120