PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/22-01:27:50
G01     67.5           32.5                4.9 +/-    1.15       8.1 +/-    1.15  0.030 / 0.050
G07     139.1          28.7                6.2 +/-    1.76      11.2 +/-    1.76  0.030 / 0.040
G11     53.5           31.1                4.9 +/-    0.97       8.5 +/-    0.97  0.040 / 0.050
G13     271.8          36.8                7.2 +/-    1.17      11.1 +/-    1.17  0.030 / 0.040
G15     299.3          16.2                5.3 +/-    3.49      12.8 +/-    3.49  0.040 / 0.070
G17     238.3          69.7                7.4 +/-    1.35       7.8 +/-    1.35  0.040 / 0.080
G19     226.6          45.0                9.4 +/-    1.20      12.7 +/-    1.20  0.050 / 0.110
G28     25.7           58.3                5.1 +/-    0.42       5.8 +/-    0.42  0.050 / 0.100
G30     137.8          54.6                6.3 +/-    0.99       7.5 +/-    0.99  0.060 / 0.120