PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/11-18:27:40
G02     199.9          16.5               15.9 +/-    1.50      38.0 +/-    1.50  0.070 / 0.170
G06     172.5          48.7               14.9 +/-    0.73      19.1 +/-    0.73  0.080 / 0.150
G13     229.0          16.0               15.0 +/-    2.06      36.4 +/-    2.06  0.050 / 0.090
G17     15.0           63.9               11.3 +/-    0.69      12.4 +/-    0.69  0.040 / 0.090
G19     311.6          71.9               13.2 +/-    0.77      13.8 +/-    0.77  0.080 / 0.170
G24     312.1          26.8               12.7 +/-    2.40      23.9 +/-    2.40  0.070 / 0.170
G28     78.9           46.1               12.7 +/-    0.42      16.9 +/-    0.42  0.030 / 0.050
G30     155.6          15.4               14.9 +/-    0.75      36.8 +/-    0.75  0.030 / 0.040