PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/12-18:28:00
G01     237.3          26.7               12.4 +/-    2.03      23.4 +/-    2.03  0.030 / 0.030
G03     307.8          59.8               11.1 +/-    0.76      12.6 +/-    0.76  0.040 / 0.040
G14     73.4           33.6                8.4 +/-    1.43      13.7 +/-    1.43  0.120 / 0.090
G16     157.0          31.1               13.8 +/-    1.68      23.6 +/-    1.68  0.080 / 0.120
G22     263.8          76.1               11.6 +/-    0.69      11.9 +/-    0.69  0.030 / 0.050
G23     297.7          29.0               10.1 +/-    1.39      18.1 +/-    1.39  0.050 / 0.050
G26     119.9          48.5               11.4 +/-    0.61      14.6 +/-    0.61  0.080 / 0.100
G31     41.2           44.2                8.4 +/-    1.13      11.4 +/-    1.13  0.070 / 0.120
G32     89.0           13.9                9.7 +/-    3.27      24.8 +/-    3.27  0.050 / 0.030