PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/29-18:57:40
G02     220.7          64.0               10.6 +/-    1.30      11.7 +/-    1.30  0.150 / 0.420
G06     49.4           70.7                8.1 +/-    0.45       8.5 +/-    0.45  0.130 / 0.380
G12     318.9          38.2                6.1 +/-    1.96       9.2 +/-    1.96  0.050 / 0.050
G17     59.5           31.1                6.4 +/-    2.01      10.9 +/-    2.01  0.050 / 0.040
G19     45.1           45.3                8.7 +/-    1.24      11.7 +/-    1.24  0.060 / 0.110
G24     259.6          40.1                9.6 +/-    2.55      14.0 +/-    2.55  0.080 / 0.100
G28     124.0          15.3                9.3 +/-    2.30      23.0 +/-    2.30  0.060 / 0.080