PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/29-23:12:30
G02     223.4          67.8               11.9 +/-    1.54      12.7 +/-    1.54  0.060 / 0.090
G06     47.0           70.9               11.3 +/-    0.41      11.9 +/-    0.41  0.090 / 0.090
G12     319.4          39.6                9.1 +/-    0.94      13.4 +/-    0.94  0.120 / 0.410
G17     62.9           27.6                8.5 +/-    0.67      15.6 +/-    0.67  0.090 / 0.510
G19     47.0           44.4               10.4 +/-    0.35      14.1 +/-    0.35  0.050 / 0.040
G24     255.0          39.4               12.1 +/-    1.53      17.8 +/-    1.53  0.040 / 0.050
G28     125.8          12.5               13.9 +/-    1.29      36.7 +/-    1.29  0.030 / 0.070