PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/15-22:57:50
G02     202.6          34.0               15.9 +/-    0.89      25.7 +/-    0.89  0.070 / 0.080
G06     167.5          65.4               14.0 +/-    0.50      15.2 +/-    0.50  0.080 / 0.100
G12     305.6          12.0                6.1 +/-   11.09      16.3 +/-   11.09  0.190 / 0.320
G17     35.6           49.3               10.5 +/-    1.20      13.3 +/-    1.20  0.290 / 0.310
G19     358.6          66.0                9.3 +/-    0.76      10.1 +/-    0.76  0.040 / 0.040
G24     297.9          38.3                9.9 +/-    1.93      14.8 +/-    1.93  0.050 / 0.040
G28     98.9           35.7               11.4 +/-    1.06      17.9 +/-    1.06  0.050 / 0.090