PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/27-00:42:40
G02     199.3          19.0               11.4 +/-    1.03      25.7 +/-    1.03  0.030 / 0.040
G06     172.9          49.7               10.8 +/-    1.47      13.7 +/-    1.47  0.040 / 0.040
G13     230.2          15.4                9.9 +/-    1.88      24.5 +/-    1.88  0.050 / 0.040
G17     11.4           65.0                7.6 +/-    1.28       8.3 +/-    1.28  0.030 / 0.040
G19     310.1          71.3                7.7 +/-    0.67       8.1 +/-    0.67  0.070 / 0.140
G24     312.4          26.8                7.9 +/-    2.05      14.9 +/-    2.05  0.070 / 0.140
G28     84.6           41.2                9.1 +/-    0.59      12.9 +/-    0.59  0.050 / 0.090
G30     155.9          15.5               11.9 +/-    2.30      29.3 +/-    2.30  0.040 / 0.080