PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/26-02:58:00
G02     200.2          26.5                5.8 +/-    0.67      10.9 +/-    0.67  0.040 / 0.040
G06     171.5          57.0                5.3 +/-    1.53       6.2 +/-    1.53  0.030 / 0.040
G13     225.0          10.5                5.1 +/-    3.86      14.1 +/-    3.86  0.030 / 0.030
G17     23.8           58.2                3.4 +/-    0.66       4.0 +/-    0.66  0.030 / 0.040
G19     336.7          69.9                2.9 +/-    0.80       3.0 +/-    0.80  0.050 / 0.100
G24     307.7          31.8                1.8 +/-    1.24       3.0 +/-    1.24  0.050 / 0.110
G28     92.9           36.8                3.6 +/-    0.89       5.6 +/-    0.89  0.250 / 0.550