PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/14-22:57:40
G02     216.9          62.2               14.3 +/-    1.20      15.9 +/-    1.20  0.030 / 0.080
G06     54.3           72.7               12.7 +/-    0.41      13.3 +/-    0.41  0.040 / 0.070
G12     319.1          37.7               10.8 +/-    1.02      16.4 +/-    1.02  0.120 / 0.440
G17     56.5           34.3               10.2 +/-    0.81      16.4 +/-    0.81  0.090 / 0.430
G19     39.3           49.5               11.3 +/-    0.70      14.3 +/-    0.70  0.040 / 0.080
G24     263.4          41.3               14.2 +/-    1.73      20.2 +/-    1.73  0.040 / 0.040
G28     123.6          12.5               13.7 +/-    1.60      36.2 +/-    1.60  0.080 / 0.100