PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/15-02:43:10
G02     200.6          25.0                5.1 +/-    2.67      10.0 +/-    2.67  0.040 / 0.040
G06     174.8          54.0                5.3 +/-    0.93       6.4 +/-    0.93  0.040 / 0.030
G13     223.9          10.8                5.4 +/-    2.45      14.9 +/-    2.45  0.180 / 0.380
G17     28.7           55.0                3.6 +/-    1.33       4.3 +/-    1.33  0.210 / 0.470
G19     331.7          70.2                2.7 +/-    0.78       2.8 +/-    0.78  0.090 / 0.120
G24     305.4          34.4                2.0 +/-    2.28       3.2 +/-    2.28  0.070 / 0.120
G28     89.9           40.2                4.2 +/-    1.31       6.1 +/-    1.31  0.040 / 0.030
G30     157.6          11.4                4.6 +/-    4.05      12.5 +/-    4.05  0.030 / 0.030