PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/15-00:12:40
G01     40.4           15.5                8.2 +/-    1.68      20.0 +/-    1.68  0.040 / 0.060
G06     178.2          35.9               12.3 +/-    1.50      19.2 +/-    1.50  0.040 / 0.070
G13     236.2          21.9               12.0 +/-    1.04      25.3 +/-    1.04  0.090 / 0.210
G15     269.6          12.0               11.1 +/-    1.84      29.6 +/-    1.84  0.080 / 0.190
G17     7.6            68.8                9.2 +/-    0.67       9.8 +/-    0.67  0.090 / 0.260
G19     278.2          69.2                8.5 +/-    0.48       9.1 +/-    0.48  0.090 / 0.220
G24     315.4          21.6                6.9 +/-    4.04      14.6 +/-    4.04  0.150 / 0.350
G28     68.8           49.2                7.6 +/-    0.72       9.6 +/-    0.72  0.140 / 0.310
G30     154.7          26.4               12.2 +/-    1.74      23.2 +/-    1.74  0.060 / 0.130