PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/12-18:27:40
G01     237.3          26.7               11.2 +/-    1.21      21.1 +/-    1.21  0.030 / 0.060
G03     307.8          59.8                9.5 +/-    1.03      10.8 +/-    1.03  0.040 / 0.070
G14     73.4           33.6                8.7 +/-    0.84      14.2 +/-    0.84  0.030 / 0.040
G16     157.0          31.1               13.0 +/-    1.80      22.2 +/-    1.80  0.030 / 0.040
G22     263.8          76.1                9.1 +/-    1.01       9.3 +/-    1.01  0.080 / 0.130
G23     297.7          29.0                8.4 +/-    1.47      15.0 +/-    1.47  0.070 / 0.140
G26     119.9          48.5               11.3 +/-    1.50      14.5 +/-    1.50  0.080 / 0.130
G31     41.2           44.2                6.5 +/-    0.41       8.9 +/-    0.41  0.070 / 0.150
G32     89.0           13.9                9.9 +/-    1.07      25.4 +/-    1.07  0.040 / 0.050