PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/24-03:27:50
G01     66.7           32.3                2.9 +/-    0.64       4.8 +/-    0.64  0.040 / 0.060
G07     139.4          27.8                5.1 +/-    1.91       9.4 +/-    1.91  0.040 / 0.050
G11     52.6           29.6                3.3 +/-    1.64       5.8 +/-    1.64  0.090 / 0.240
G13     271.2          36.6                5.8 +/-    0.95       8.9 +/-    0.95  0.100 / 0.250
G15     298.7          16.4                3.7 +/-    1.28       8.8 +/-    1.28  0.030 / 0.040
G17     240.7          71.6                5.0 +/-    0.41       5.2 +/-    0.41  0.030 / 0.040
G19     227.2          46.1                6.8 +/-    1.43       9.1 +/-    1.43  0.060 / 0.110
G28     26.9           58.1                2.0 +/-    0.67       2.4 +/-    0.67  0.040 / 0.130
G30     138.3          54.7                5.3 +/-    0.49       6.3 +/-    0.49  0.040 / 0.080