PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/23-08:13:10
G02     200.4          17.1                4.9 +/-    1.41      11.5 +/-    1.41  0.090 / 0.290
G06     172.3          50.4                8.2 +/-    1.40      10.3 +/-    1.40  0.100 / 0.330
G13     228.6          14.9                5.5 +/-    1.87      13.7 +/-    1.87  0.130 / 0.320
G17     22.5           59.8                5.1 +/-    0.48       5.7 +/-    0.48  0.170 / 0.290
G19     304.4          70.4                5.8 +/-    0.61       6.2 +/-    0.61  0.030 / 0.040
G24     309.3          31.4                5.1 +/-    1.43       8.6 +/-    1.43  0.020 / 0.040
G28     83.5           42.7                6.9 +/-    0.39       9.7 +/-    0.39  0.040 / 0.080
G30     157.3          18.5                6.7 +/-    2.03      15.4 +/-    2.03  0.040 / 0.090