PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/27-17:43:00
G01     45.8           21.9                8.4 +/-    2.41      17.7 +/-    2.41  0.130 / 0.240
G06     175.4          32.2               12.5 +/-    2.30      21.0 +/-    2.30  0.140 / 0.270
G11     43.6           10.2                6.6 +/-    4.88      18.4 +/-    4.88  0.060 / 0.080
G13     244.6          27.0               10.4 +/-    2.82      19.3 +/-    2.82  0.060 / 0.080
G15     280.0          14.1                9.5 +/-    1.71      24.1 +/-    1.71  0.120 / 0.420
G17     335.4          76.2               11.4 +/-    0.38      11.7 +/-    0.38  0.160 / 0.420
G19     255.0          62.0               10.4 +/-    0.60      11.6 +/-    0.60  0.020 / 0.020
G24     318.2          13.7                4.1 +/-   23.06      10.6 +/-   23.06  0.030 / 0.030
G28     60.9           50.5               10.2 +/-    1.07      12.7 +/-    1.07  0.050 / 0.050
G30     152.3          35.8               11.6 +/-    0.98      18.1 +/-    0.98  0.040 / 0.030