PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/11-18:28:00
G02     199.9          16.5               15.7 +/-    2.27      37.6 +/-    2.27  0.060 / 0.080
G06     172.5          48.7               14.3 +/-    1.03      18.3 +/-    1.03  0.050 / 0.060
G13     229.0          16.0               15.9 +/-    1.69      38.5 +/-    1.69  0.090 / 0.200
G17     15.0           63.9               11.4 +/-    0.76      12.5 +/-    0.76  0.090 / 0.210
G19     311.6          71.9               11.8 +/-    0.67      12.3 +/-    0.67  0.090 / 0.170
G24     312.1          26.8               11.6 +/-    1.32      21.9 +/-    1.32  0.140 / 0.170
G28     78.9           46.1               10.8 +/-    0.82      14.3 +/-    0.82  0.150 / 0.350
G30     155.6          15.4               13.5 +/-    1.12      33.3 +/-    1.12  0.130 / 0.330