PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/14-06:57:50
G02     200.7          22.1                5.6 +/-    1.75      11.7 +/-    1.75  0.080 / 0.090
G06     171.6          54.8                8.0 +/-    0.57       9.6 +/-    0.57  0.080 / 0.090
G13     225.3          11.9                3.4 +/-    1.74       9.1 +/-    1.74  0.270 / 0.390
G17     27.4           56.1                4.3 +/-    0.99       5.1 +/-    0.99  0.200 / 0.460
G19     321.2          70.5                4.8 +/-    0.48       5.1 +/-    0.48  0.060 / 0.040
G24     305.8          34.7                3.9 +/-    1.17       6.3 +/-    1.17  0.040 / 0.040
G28     88.6           40.4                5.6 +/-    1.35       8.2 +/-    1.35  0.050 / 0.130
G30     157.8          14.1                6.9 +/-    1.74      17.5 +/-    1.74  0.050 / 0.090