PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/26-22:12:30
G02     202.6          33.9               18.1 +/-    2.42      29.3 +/-    2.42  0.090 / 0.090
G06     166.4          65.8               16.0 +/-    1.29      17.4 +/-    1.29  0.090 / 0.090
G12     305.6          12.0               10.5 +/-    2.76      28.1 +/-    2.76  0.040 / 0.100
G17     35.2           49.6               11.3 +/-    0.66      14.3 +/-    0.66  0.050 / 0.100
G19     359.1          65.9               11.6 +/-    0.67      12.6 +/-    0.67  0.150 / 0.350
G24     298.1          38.1               12.6 +/-    1.33      18.9 +/-    1.33  0.120 / 0.260
G28     98.8           35.8               13.1 +/-    0.44      20.5 +/-    0.44  0.040 / 0.040