PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/12-00:28:10
G02     224.9          69.0               11.8 +/-    0.60      12.6 +/-    0.60  0.050 / 0.060
G06     46.0           70.9               10.7 +/-    0.41      11.3 +/-    0.41  0.050 / 0.070
G12     319.6          40.6               10.1 +/-    0.75      14.6 +/-    0.75  0.060 / 0.100
G17     64.1           26.5                8.7 +/-    0.69      16.5 +/-    0.69  0.080 / 0.070
G19     47.9           43.9               11.0 +/-    1.01      15.0 +/-    1.01  0.280 / 0.410
G24     253.2          39.0               12.6 +/-    2.17      18.7 +/-    2.17  0.280 / 0.410
G28     126.5          11.4               13.0 +/-    2.49      35.2 +/-    2.49  0.050 / 0.070