PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/21-18:57:40
G01     267.7          40.4               12.1 +/-    1.96      17.5 +/-    1.96  0.040 / 0.050
G03     316.3          33.1                9.2 +/-    1.65      15.1 +/-    1.65  0.070 / 0.060
G10     131.1          15.5               11.5 +/-    1.28      28.3 +/-    1.28  0.030 / 0.030
G11     250.2          19.5               12.3 +/-    5.19      27.4 +/-    5.19  0.020 / 0.020
G14     45.3           49.2                9.9 +/-    0.84      12.6 +/-    0.84  0.060 / 0.150
G22     313.6          54.3               11.7 +/-    1.00      14.0 +/-    1.00  0.250 / 0.200
G25     50.6           16.3                8.1 +/-    3.89      19.6 +/-    3.89  0.070 / 0.080
G26     146.8          26.8               12.9 +/-    1.28      24.1 +/-    1.28  0.040 / 0.080
G31     50.9           72.1               10.0 +/-    0.29      10.5 +/-    0.29  0.060 / 0.070
G32     66.3           30.9                9.7 +/-    2.34      16.7 +/-    2.34  0.070 / 0.070