PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/22-20:42:40
G01     38.2           11.2               10.7 +/-    5.33      29.2 +/-    5.33  0.110 / 0.150
G02     199.5          14.9               19.2 +/-    2.58      47.9 +/-    2.58  0.080 / 0.130
G06     172.1          47.6               13.7 +/-    0.71      17.8 +/-    0.71  0.120 / 0.240
G13     232.2          17.4               13.7 +/-    2.55      32.2 +/-    2.55  0.120 / 0.180
G17     7.7            66.9               10.4 +/-    0.44      11.2 +/-    0.44  0.040 / 0.040
G19     295.5          70.3               10.7 +/-    0.74      11.3 +/-    0.74  0.040 / 0.050
G24     313.6          25.1                9.3 +/-    1.54      18.2 +/-    1.54  0.370 / 0.350
G28     80.6           43.1               10.8 +/-    0.80      15.0 +/-    0.80  0.150 / 0.200
G30     156.0          20.2               13.1 +/-    2.03      28.8 +/-    2.03  0.040 / 0.060