PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/24-04:43:00
G01     39.5           13.5                1.5 +/-    2.54       3.8 +/-    2.54  0.050 / 0.060
G02     198.7          13.4                4.7 +/-    3.43      12.0 +/-    3.43  0.040 / 0.060
G06     177.1          40.6                5.8 +/-    0.84       8.4 +/-    0.84  0.030 / 0.030
G13     235.5          19.5                5.1 +/-    4.76      11.5 +/-    4.76  0.030 / 0.030
G15     266.7          11.1                4.8 +/-    2.13      13.2 +/-    2.13  0.160 / 0.240
G17     7.6            67.7                3.7 +/-    0.41       4.0 +/-    0.41  0.120 / 0.290
G19     292.0          71.0                3.3 +/-    0.54       3.5 +/-    0.54  0.160 / 0.240
G24     315.6          21.5                1.6 +/-    1.94       3.3 +/-    1.94  0.090 / 0.240
G28     77.3           44.4                4.1 +/-    0.87       5.5 +/-    0.87  0.170 / 0.410
G30     154.5          20.7                4.7 +/-    2.27      10.1 +/-    2.27  0.310 / 0.330